20111100011002 has 64 divisors (see below), whose sum is σ = 41108003887104. Its totient is φ = 7124811503040.

The previous prime is 20111100010997. The next prime is 20111100011003. The reversal of 20111100011002 is 20011000111102.

It is a self number, because there is not a number n which added to its sum of digits gives 20111100011002.

It is not an unprimeable number, because it can be changed into a prime (20111100011003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74832318 + ... + 75100585.

It is an arithmetic number, because the mean of its divisors is an integer number (642312560736).

Almost surely, 2^{20111100011002} is an apocalyptic number.

20111100011002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20111100011002 is an abundant number, since it is smaller than the sum of its proper divisors (20996903876102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111100011002 is a wasteful number, since it uses less digits than its factorization.

20111100011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149933003.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20111100011002 its reverse (20011000111102), we get a palindrome (40122100122104).

The spelling of 20111100011002 in words is "twenty trillion, one hundred eleven billion, one hundred million, eleven thousand, two".